This material serves as the introductory activity in the Mid Acqua Series. The card set features "S" blending sound words, with the blend highlighted in red and the other vowels in blue. Aligned with Montessori principles, the "Trio Explorer - Mid Acqua Series" activity is designed to help children grasp that written words represent sounds. This series emphasizes basic "S" blending sound words, with consonants highlighted in red and vowels in blue. It includes 13 picture/nomenclature cards, 13 p